Question

Solve the matrix equation AX = B for the 2  3 matrix X, given...

Answer 1

\[A= \left[\begin{matrix}4 & -1 \\ -1 & 0\end{matrix}\right] and B=\left[\begin{matrix}3 & 7 & -2 \\ 0 & -4 & -1\end{matrix}\right]\]

Answer 2

I don`t know how to do this

Answer 3

do I times each by the inverse of matrix A?

Answer 4

yes you need to find the inverse of matrix A first

then you multiply both sides on the left by this inverse

Answer 5

so if C is the inverse of matrix A, then

X = C*B

Answer 6

keep in mind that the order matters and C*B is NOT the same as B*C

Answer 7

so it should equal
\[x= \left[\begin{matrix}0 & 4 & 1 \\ -3 & 9 & 6\end{matrix}\right]\]

Answer 8

hey! matrix people! i need help with 1 more question! when you all get done here come on over to my problem. ;)
http://openstudy.com/study#/updates/512d6933e4b098bb5fbc2976

Answer 9

very nice KatClaire, you got it

Answer 10

Thank you :)!!

Answer 11

yw